3 Backend Implementations

Backend Implementations

Concrete backends, the shared ZMQ readout parser, and (feature zmq) the structured IpcMessage PUB/SUB stack from #55.

Child pages

• 3.1 RustBackend — always-on push/pull stub (no external deps)
• 3.2 ZmqIpcBackend — feature zmq; binary latest-value SUB drain; reconnect; not HybridFlowBackend
• 3.3 ZMQ Readout Parsing and Golden Frames — parse_readout_packet + test-vectors/zmq/
• 3.4 Structured ZeroMQ IpcMessage Transport — ZmqMessagePublisher / Subscriber / ZmqHybridFlowBackend (#55)

Backend / stack	Feature	Role
RustBackend	default	Local reference: doubles channels into pos/neg pairs after initialize
ZmqIpcBackend	zmq	SUB to remote PUB; binary tick + f32 readout; Send+Sync via mutex
ZmqHybridFlowBackend	zmq	HybridFlowBackend over canonical JSON envelopes (separate sockets)

Sources: src/rust_backend.rs, src/zmq_backend.rs, src/zmq_readout.rs, src/zmq_message/